Protoporphyrin IX

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** A tetrapyrrole containing 4 methyl, 2 propionic and 2 vinyl side chains that is a metabolic precursor for hemes, cytochrome c and chlorophyll. Protoporphyrin IX is produced by oxidation of the methylene bridge of protoporphyrinogen by the enzyme protoporphyrinogen oxidase.

**Synonyms:** - 2,18-Porphinedipropionic acid, 3,8,13,17-tetramethyl-7,12-divinyl- (8CI) - 21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17-tetramethyl- - 3,3'-(3,7,12,17-Tetramethyl-8,13-divinylporphine-2,18-diyl)di(propionic acid) - 3,3'-(3,7,12,17-tetramethyl-8,13-divinyl-21H,23H-porphine-2,18-diyl)-bis-propionic acid - 3,7,12,17-Tetramethyl-8,13-divinyl-2,18-porphinedipropionic Acid - 3,7,12,17-Tetramethyl-8,13-divinyl-2,18-porphinedipropionic Acid - 3,7,12,17-tetramethyl-8,13-divinylporphyrin-2,18-dipropanoic acid - 7,12-diethenyl-3,8,13,17-tetramethylporphyrin-2,18-dipropanoic acid - Ooporphyrin - PROTOPORPHYRIN - PpIX - Protoporphyrin - Protoporphyrin - Protoporpyrin IX